module chapter2;
#include <iostream>
using namespace std;

namespace section5{
    //#include <iostream> or #include <cstdio> -> i/o stream
    //using namespace std;

    void getchar(char &x){
        x = std::getchar();
    }

    void putchar(char x){
        std::putchar(x);
    }

    void cout_out(char* c){
        cout << c << endl;
    }

    void cin_input(void *&c){
        cin >> c;
    }

    void scanf_input(int &c){
        scanf("%d", &c);
    }

    void printf_out(char* c){
        printf("%s\n", c);
    }
}
